Type-writer hammer mechanism.



No. 704,2!8. Patented July 8, I902.

S. J. SEIFRIED. TYPE WRITER HAMMER MECHANISM.

(Application filed June 16, 1901.)

(No Model.) 2 8heeis$heet l.

WITNESSES [N VEN TOR.

0% Q@ I 2% gwaw A TTORIIVE Y5 m: Monms PETERS cu. PHo'ruuTHo, WASNINGTOLu c N0. 704,2!8. Patented July 8, I902.

s. .1. SEIFRIED.

TYPE WRITER HAMMER MECHANISM.

(Application filed June 1 5, 1901.) (No'ModeL) 2 Sheets-Sheet 2.

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UNITED STATES PATENT OFFICE.

SAMUEL J. SEIFRIED, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHICAGO WRITINGMACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

TYPE-WRITER HAMMER MECHANISM.

SPECIFICATION forming part of Letters Patent No. 704,218, dated July 8,1902.

Application filed June1l5, 1901. Serial No. 64,646. (No model.)

To (all whom it may concern:

Be it known that I, SAMUEL J. SEIFRIED, a citizen of the United States,residing in Chicago, in the conntyof Cook and State of Illinois,haveinvented a new and useful Improvementin Type-Writer Hammer Mechanism, ofwhich the following is a specification.

This invention relates to improvements in the type-writers formerlyknown as the Munson and more recently as the Chicago type-writers, andparticularly to the hammersupport and operating mechanism.

The invention is an improvement upon the construction shown in my PatentNo. 474,350,

dated May 3, 1892; and it consists in the novel construction of partsand devices and in the novel combinations of parts and deviceshereinafter fully explained and shown in the accompanying drawings, inwhich latter Figure 1 is a perspective of that portion of the machineembodying my invention, and Fig. 2 is a rear elevation of the machine.

In said drawings, 5 represents the frame of the machine; 6, a horizontalplate forming the main frame member of the paper-carriage.

7 7 are risers on plate 6, and 8is the paperfeed roller.

9 is the type-cylinder, 10 the roller supporting the rear of thecarriage and attached to plate 6 by bracket 11, and 12 is the track onwhich said roller moves.

The hammer is shown at 13 and is mounted on an arm 14, rigidly securedon a rock-shaft 15, corresponding to the shaft R of my said patent.Shaft 15 is actuated by a companion and parallel rock-shaft 16,corresponding to the rock-shaft R of said patent, and the two shafts areconnected by cranks 17 and 18, one on each shaft, and a link 19. Shaft16 is provided at its end with an arm 20, which re ceives impulses fromthe lifter 21 at each actuation of any of the printing-keys.

In my present improvement instead of supporting the rock-shaftsexteriorly of the U- shaped frame R, as in said patent, I now employ aU-shaped frame the limbs of which are hollowand form bearings for theshafts. This tubular frame is shown at 22, 23, and 24, 22 being thelimb-inclosing shaft 15, 23 the limb-inclosing shaft 16, and 24 beingthe cross-head of the frame. The shafts project beyond the frame at bothends, so that they may be provided with the arms 14 and 20 at one endand with the cranks 17 and 18 at the otherend. By thus inclosing theshafts in the tubular limbs of the frames I not only obtain all thebenefits of the patented constructionviz., an open space between thelimbs of the frame through which the carriage may move and through whichthe paper may be inserted without interfering with the hammer-but inaddition I bring the hammershaft into coincidence with the axis on whichthe carriage is tipped when making erasures or inspecting the writing,thus rendering it easy to avoid interference between the hammer and thecarriage at such times.

The frame is intended to be moved longitudinally from the positionoccupied when the machine is not in use (shown at Fig. 1) to that ofFig. 2 when the machine is to be used, and this change of positionbrings the hammer opposite the printing-center and the arm 20 intooperative relation to the lifter 21, as will be understood. Theframeissupported with this freedom to move longitudinally in arms 27 and28, attached to the stationary .parts 29 and 30 of the frame, the armsloosely encircling the tubular member 23 of the frame.

The carriage-riser 7 is provided with an opening 31, through which thelimb 22 of the frame passes, and the opening 31 is preferably lined witha bushing-ring 32.

The tubular hammer-frame is maintained with limb 22 located verticallyabove limb 23, so that the open space between the limbs is renderedavailable for the passage of the carriage and paper, by a depending arm33, rigid with a collar 34, secured to limb 23 by a setscrew 35. Thelower end of this arm enters and moves longitudinally through the slot36 in a stationary guide 37, the slot being narrow and fitting the arm,so as to prevent any rocking of the hammerframe. This arm and guide-slotalso limit the slidingmovements of the hammer-frame, as will beunderstood from Fi 1.

INhen the hammer-frame is moved outward to the position of Fig. 2, it isheld against any backward sliding movement by the engagement with arm3301: the hooked end 38 of a lever 39, pivoted at 41 to the support 28.A spring presses upon the lever 39 to hold it in engagement. By thisdevice the hammerframe is rendered Wholly independent of the carriagemovement. The hook is so shaped as to insure its automatic engagementwith arm 33 as soon as the latter has moved far enough to carry the armpast the point of the hook.

I claim- 4 1. The hammer-framehaving tubular limbs, in combination withthe hammer rock-shaft in one limb of the frame, the rock-shaftactuatedby the keys and supported in the other limb of the frame, and theconnections between the shafts, substantially as specified.

2. The hammer-frame made U-shaped and having its limbs made tubular, incombination with the hammer, and mechanism for actuating it, suchmechanism embodying rockshafts supported in the tubular limbs of theframe, substantially as specified.

3. The combination with the paper-carriage and the hammer of a shaft foractuating the hammer located coincidentally with the axis upon which thecarriage tips, and means for supporting the shaft in such positionwithout interfering with the carriage, substantially as specified.

, 4. The combination with the paper-carriage, the hammer, and thehammer-shaft, of a U- shaped frame supporting said shaft in one of itslimbs and positioning it in coincidence with the axis on which thecarriage tips, substantially as specified.

5. The combination with the hammer, of a. frame made U-shaped and withtubular limbs, a rock-shaft for vibrating the hammer supported in onelimb of the frame, a second rock-shaft for actuating the first-mentionedone and itself rocked by the keys, connections between the shafts at oneend thereof,

and supports for the frame permitting longitudinal movement thereof,substantially as specified.

6. The combination in a type-writer, of a carriage, the hammer and the U-shaped hammer-frame,the hammer being supported upon a shaft in saidframe whose axis is coincident with the axle upon which the carriagetips, substantially as specified.

7. The type-writer wherein are combined a laterally-movablehammer-frame, and means for automatically locking said frame, such meansconsisting of the arm 33 attached to the frame, and the spring-pressedhooked le- Ver 39, substantially as specified.

8. The type-writer wherein are combined a laterally-movablehammer-frame, an arm 33 attached to the frame, and the slottedstationary guide 33 traversed by the arm, substantially as specified.

SAMUEL J SEIFRIED.

\Vitnesses:

H. M. MUNDAY, Enw. S. EVARTS.

